21113031022 has 16 divisors (see below), whose sum is σ = 32826113280. Its totient is φ = 10177698168.

The previous prime is 21113030959. The next prime is 21113031077. The reversal of 21113031022 is 22013031112.

It is a junction number, because it is equal to n+sod(n) for n = 21113030987 and 21113031005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1669872 + ... + 1682467.

It is an arithmetic number, because the mean of its divisors is an integer number (2051632080).

Almost surely, 2^21113031022 is an apocalyptic number.

21113031022 is a deficient number, since it is larger than the sum of its proper divisors (11713082258).

21113031022 is a wasteful number, since it uses less digits than its factorization.

21113031022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352455.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21113031022 its reverse (22013031112), we get a palindrome (43126062134).

The spelling of 21113031022 in words is "twenty-one billion, one hundred thirteen million, thirty-one thousand, twenty-two".